1. Description of Business and Significant Accounting Policies: PASSUR Network (Policies)	12 Months Ended
Oct. 31, 2021
Policies
PASSUR Network	PASSUR Network The PASSUR Network was comprised of PASSUR and SMLAT Systems, which included the direct production, shipping, and installation costs incurred for each PASSUR and SMLAT System, which were recorded at cost, net of accumulated depreciation. Depreciation was charged to cost of revenues and was recorded using the straight-line method over the estimated useful life of the asset, which was estimated PASSUR Aerospace, Inc. and Subsidiary Notes to Consolidated Financial Statements (continued) 1. Description of Business and Significant Accounting Policies (continued) at five years for SMLAT Systems and seven years for PASSUR Systems. PASSUR and SMLAT Systems which were not installed, raw materials, work-in-process, and finished goods components were carried at cost and not depreciated until installed. During the second quarter of fiscal year 2020, in light of the FAA's mandate for ADS-B equipage on aircrafts operating in most U.S. airspace, effective January 2020, and parallel adoption of ADS-B requirements in much of the world, the Company performed a comprehensive review of its data feeds, specifically those associated with the PASSUR Network units, and external ADS-B data feeds to determine if these external data feeds provide sufficient redundant data as to that generated from the existing PASSUR installations. The Company determined that such services could be powered by a combination of FAA data plus commercial ADS-B aggregator feeds and other data feeds available to the Company, which would provide a more cost-effective solution and allow us to focus more on value-added analytics, and less on sensor technology. In this regard, the Company reviewed and decommissioned approximately half of its PASSUR Network system assets during the second quarter of the fiscal year ended October 31, 2020. As a result, the Company wrote off the total carrying value applicable to the PASSUR Network systems of approximately $3,565,000, and lease assets applicable to these PASSUR locations of approximately $175,000 during the second quarter of fiscal 2020, which amounts were included as an impairment charge for the year ended October 31, 2020. The write-off amount included PASSUR System and SMLAT System assets as well as inventory of finished and spare parts. The Company essentially completed the decommissioning process during fiscal year 2021.

1. Description of Business and Significant Accounting Policies: PASSUR Network (Policies)

12 Months Ended

Oct. 31, 2021

PASSUR Network

The PASSUR Network was comprised of PASSUR and SMLAT Systems, which included the direct production, shipping, and installation costs incurred for each PASSUR and SMLAT System, which were recorded at cost, net of accumulated depreciation. Depreciation was charged to cost of revenues and was recorded using the straight-line method over the estimated useful life of the asset, which was estimated

PASSUR Aerospace, Inc. and Subsidiary

Notes to Consolidated Financial Statements (continued)

1. Description of Business and Significant Accounting Policies (continued)

at five years for SMLAT Systems and seven years for PASSUR Systems. PASSUR and SMLAT Systems which were not installed, raw materials, work-in-process, and finished goods components were carried at cost and not depreciated until installed.

During the second quarter of fiscal year 2020, in light of the FAA's mandate for ADS-B equipage on aircrafts operating in most U.S. airspace, effective January 2020, and parallel adoption of ADS-B requirements in much of the world, the Company performed a comprehensive review of its data feeds, specifically those associated with the PASSUR Network units, and external ADS-B data feeds to determine if these external data feeds provide sufficient redundant data as to that generated from the existing PASSUR installations. The Company determined that such services could be powered by a combination of FAA data plus commercial ADS-B aggregator feeds and other data feeds available to the Company, which would provide a more cost-effective solution and allow us to focus more on value-added analytics, and less on sensor technology. In this regard, the Company reviewed and decommissioned approximately half of its PASSUR Network system assets during the second quarter of the fiscal year ended October 31, 2020. As a result, the Company wrote off the total carrying value applicable to the PASSUR Network systems of approximately $3,565,000, and lease assets applicable to these PASSUR locations of approximately $175,000 during the second quarter of fiscal 2020, which amounts were included as an impairment charge for the year ended October 31, 2020. The write-off amount included PASSUR System and SMLAT System assets as well as inventory of finished and spare parts. The Company essentially completed the decommissioning process during fiscal year 2021.